Bearded Beggarticks and Crowned Beggarticks (Bidens aristosa and coronata)
Bearded Beggarticks and Crowned Beggarticks is also known as Bur Marigolds and Spanish Needles. Bidens ploylepis,
once considered a seperate species, is now considered B. aristosa..

Plant Type:
This is a herbaceous plant, it is a annual which can
reach 150cm in height (60inches). Bidens aristosa is sometimes a biennial.Leaves: The leaf arrangement
is opposite. Each leaf is pinnately divided into sharply toothed
leaflets which are themselves sometimes divided.Flowers: The flowers have numerous parts
and are up to 3.8cm wide (1.5 inches). They are yellow. Blooms first appear in late summer and continue into early fall.
Fruit: A thin achene with barbs
(usually two) that can hang in fur and clothing.Habitat: Fields and glades. Often in low areas or near
water.Range: Most of eastern and midwestern U. S. Except extream south. Bidens aristosa is
found further south than B. coronata.
Color PhotoMore InfoClassification

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These Bidens have showy flowers unlike others which have flowers
with no rays or a few small rays. Sometimes growing in large groups they are used by bees to make a much prized dark
honey.

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One of the best general guides to wildflowers of the North Eastern and North Central United States. Newcomb's key
is an excellent, simple method for identifying plants. Newcomb has drawings for almost every plant mentioned that
are excellent aids to identifying the species. Though only the more common plants are covered this is often the first
book I pick up when trying to identify a wildflower.
Wildflo
wers of Tennessee the Ohio Valley and the Southern Appalachians
By: Dennis Horn and Tavia Cathcart and Thomas E. Hemmerly and David Duhl. , ISBN:1551054280

This is perhaps the best of many field guides covering this region. Featuring 446 excellent color photographs (located
with the text) and mentioning as similar to those illustrated are another 800 or so species for a total coverage of over
1,200 species. The start of each family section includes line drawings of some of the species showing important
features. The text includes the usual description, bloom season, range, habitat and additionally includes information
such as medical uses and lore and how the species was named. This is the official field guide of the Tennessee
Native Plant Society.